■ verb
1》 make or move with a continuous deep, resonant sound.
2》 ( ~ on ) (of a dispute) continue in a persistent but low-key way.
3》 Brit. informal discover (an illicit activity or its perpetrator): it wouldn't need a genius to ~ his little game.
4》 N. Amer. informal take part in a street fight.
■ noun
1》 a continuous deep, resonant sound like distant thunder.
2》 N. Amer. informal a street fight between gangs.
Derivatives
~r noun
rumbling adjective
Origin
ME: prob. from MDu. rommelen , rummelen , of imitative origin.